首页|Particles attrition of binary mixtures in the coal-fueled chemical looping system based on fluidized bed

Particles attrition of binary mixtures in the coal-fueled chemical looping system based on fluidized bed

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In this work,a reactive air jet attrition device with auto-recording and collection of elutriated fines was developed.Results established insights into the physiochemical interaction and further correlated attrition behaviors between char and oxygen carriers under various operation modes.The attrition rate increased by over 110％upon the introduced CO2,which brought in the significant effect of thermo-chemical stress,similarly in effects of the increased char addition ratio and the decreased sizes of char or hematite in different extents.For the char-hematite co-attrition process,the elutriated carbon loss of char with poor mechanical strength was found to be over 10％,while the reactive iron loss of hematite was found to be 6.3％,and was enriched in elutriated fines.The reaction-derived thermochemical stress and the collision-derived mechanical stress jointly controls the particle attrition during the cyclic transformation of oxygen carrier particles in coal-fueled chemical looping fluidization,especially sig-nificant in its reduction stage.

AttritionBinary speciesChemical loopingOxygen carrierCO2 capture

Heyu Li、Zhe Sun、Yan Cao

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Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China

University of Chinese Academy of Sciences,Beijing 100049,China

CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China

Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China

College of Chemistry and Chemical Engineering,Anhui University,Hefei,230601,China

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National Natural Science Foundation of China2023 Innovationdriven Development Special Foundation of Guangxi ProvinceUniversity Science Research Project of Anhui ProvinceHundred Talents Program(A)of Chinese Academy of Sciences

2217833922022AH050076

2024

10.1016/j.partic.2023.07.008

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.86(3)
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